1. Resonant whirling of aircraft propeller-engine systems;Crandall;Journal of Applied Mechanics,1981
2. Rotordynamics;Crandall,1995
3. Mechanical Vibrations;Den Hartog,1934
4. Flexural Vibrations of Rotating Shafts;Dimentberg,1961
5. Vibration of Structures and Machines;Genta,1998